_sourcecache: remove unused _update_mtime

1 files changed, 0 insertions, 6 deletions

diff --git a/src/buildstream/_sourcecache.py b/src/buildstream/_sourcecache.py
index ad0704d89..e485fbd47 100644
--- a/src/buildstream/_sourcecache.py
+++ b/src/buildstream/_sourcecache.py
@@ -340,12 +340,6 @@ class SourceCache(BaseCache):
     def _source_path(self, ref):
         return os.path.join(self._basedir, ref)
 
-    def _update_mtime(self, ref):
-        try:
-            os.utime(self._source_path(ref))
-        except FileNotFoundError as e:
-            raise SourceCacheError("Couldn't find source: {}".format(ref)) from e
-
     def _pull_source(self, source_ref, remote):
         try:
             remote.init()